From 2c8ed76e01161d9fe4e69064404cd888b4e327f3 Mon Sep 17 00:00:00 2001 From: Péter Szilágyi Date: Fri, 26 Jun 2015 20:42:27 +0300 Subject: eth: start cleaning up old protocol implementation, add metrics --- eth/handler.go | 54 +++++++++++++++++++++++++++++++++---------------- eth/metrics.go | 26 ++++++++++++++++++++++++ eth/peer.go | 64 ++++++++++++++++++++++++++++++++++++++-------------------- 3 files changed, 105 insertions(+), 39 deletions(-) create mode 100644 eth/metrics.go diff --git a/eth/handler.go b/eth/handler.go index 44d297461..d25118337 100644 --- a/eth/handler.go +++ b/eth/handler.go @@ -163,26 +163,28 @@ func (pm *ProtocolManager) newPeer(pv, nv int, p *p2p.Peer, rw p2p.MsgReadWriter return newPeer(pv, nv, genesis, current, td, p, rw) } +// handle is the callback invoked to manage the life cycle of an eth peer. When +// this function terminates, the peer is disconnected. func (pm *ProtocolManager) handle(p *peer) error { - // Execute the Ethereum handshake. + glog.V(logger.Debug).Infof("%v: peer connected", p) + + // Execute the Ethereum handshake if err := p.handleStatus(); err != nil { + glog.V(logger.Debug).Infof("%v: handshake failed: %v", p, err) return err } - - // Register the peer locally. - glog.V(logger.Detail).Infoln("Adding peer", p.id) + // Register the peer locally + glog.V(logger.Detail).Infof("%v: adding peer", p) if err := pm.peers.Register(p); err != nil { - glog.V(logger.Error).Infoln("Addition failed:", err) + glog.V(logger.Error).Infof("%v: addition failed: %v", p, err) return err } defer pm.removePeer(p.id) - // Register the peer in the downloader. If the downloader - // considers it banned, we disconnect. + // Register the peer in the downloader. If the downloader considers it banned, we disconnect if err := pm.downloader.RegisterPeer(p.id, p.Head(), p.requestHashes, p.requestBlocks); err != nil { return err } - // Propagate existing transactions. new transactions appearing // after this will be sent via broadcasts. pm.syncTransactions(p) @@ -190,13 +192,17 @@ func (pm *ProtocolManager) handle(p *peer) error { // main loop. handle incoming messages. for { if err := pm.handleMsg(p); err != nil { + glog.V(logger.Debug).Infof("%v: message handling failed: %v", p, err) return err } } return nil } +// handleMsg is invoked whenever an inbound message is received from a remote +// peer. The remote connection is torn down upon returning any error. func (pm *ProtocolManager) handleMsg(p *peer) error { + // Read the next message from the remote peer, and ensure it's fully consumed msg, err := p.rw.ReadMsg() if err != nil { return err @@ -204,23 +210,25 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { if msg.Size > ProtocolMaxMsgSize { return errResp(ErrMsgTooLarge, "%v > %v", msg.Size, ProtocolMaxMsgSize) } - // make sure that the payload has been fully consumed defer msg.Discard() + // Handle the message depending on its contents switch msg.Code { case StatusMsg: return errResp(ErrExtraStatusMsg, "uncontrolled status message") case TxMsg: - // TODO: rework using lazy RLP stream + // Transactions arrived, parse all of them and deliver to the pool var txs []*types.Transaction if err := msg.Decode(&txs); err != nil { return errResp(ErrDecode, "msg %v: %v", msg, err) } + propTxnInPacketsMeter.Mark(1) for i, tx := range txs { if tx == nil { return errResp(ErrDecode, "transaction %d is nil", i) } + propTxnInTrafficMeter.Mark(tx.Size().Int64()) jsonlogger.LogJson(&logger.EthTxReceived{ TxHash: tx.Hash().Hex(), RemoteId: p.ID().String(), @@ -250,12 +258,17 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { return p.sendBlockHashes(hashes) case BlockHashesMsg: + // A batch of hashes arrived to one of our previous requests msgStream := rlp.NewStream(msg.Payload, uint64(msg.Size)) + reqHashInPacketsMeter.Mark(1) var hashes []common.Hash if err := msgStream.Decode(&hashes); err != nil { break } + reqHashInTrafficMeter.Mark(int64(32 * len(hashes))) + + // Deliver them all to the downloader for queuing err := pm.downloader.DeliverHashes(p.id, hashes) if err != nil { glog.V(logger.Debug).Infoln(err) @@ -299,13 +312,14 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { } list = list[:len(list)-2] + "]" - glog.Infof("Peer %s: no blocks found for requested hashes %s", p.id, list) + glog.Infof("%v: no blocks found for requested hashes %s", p, list) } return p.sendBlocks(blocks) case BlocksMsg: // Decode the arrived block message msgStream := rlp.NewStream(msg.Payload, uint64(msg.Size)) + reqBlockInPacketsMeter.Mark(1) var blocks []*types.Block if err := msgStream.Decode(&blocks); err != nil { @@ -313,8 +327,9 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { blocks = nil } // Update the receive timestamp of each block - for i := 0; i < len(blocks); i++ { - blocks[i].ReceivedAt = msg.ReceivedAt + for _, block := range blocks { + reqBlockInTrafficMeter.Mark(block.Size().Int64()) + block.ReceivedAt = msg.ReceivedAt } // Filter out any explicitly requested blocks, deliver the rest to the downloader if blocks := pm.fetcher.Filter(blocks); len(blocks) > 0 { @@ -329,6 +344,9 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { if err := msgStream.Decode(&hashes); err != nil { break } + propHashInPacketsMeter.Mark(1) + propHashInTrafficMeter.Mark(int64(32 * len(hashes))) + // Mark the hashes as present at the remote node for _, hash := range hashes { p.blockHashes.Add(hash) @@ -351,6 +369,9 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { if err := msg.Decode(&request); err != nil { return errResp(ErrDecode, "%v: %v", msg, err) } + propBlockInPacketsMeter.Mark(1) + propBlockInTrafficMeter.Mark(request.Block.Size().Int64()) + if err := request.Block.ValidateFields(); err != nil { return errResp(ErrDecode, "block validation %v: %v", msg, err) } @@ -404,15 +425,14 @@ func (pm *ProtocolManager) BroadcastBlock(block *types.Block, propagate bool) { } } -// BroadcastTx will propagate the block to its connected peers. It will sort -// out which peers do not contain the block in their block set and will do a -// sqrt(peers) to determine the amount of peers we broadcast to. +// BroadcastTx will propagate a transaction to all peers which are not known to +// already have the given transaction. func (pm *ProtocolManager) BroadcastTx(hash common.Hash, tx *types.Transaction) { // Broadcast transaction to a batch of peers not knowing about it peers := pm.peers.PeersWithoutTx(hash) //FIXME include this again: peers = peers[:int(math.Sqrt(float64(len(peers))))] for _, peer := range peers { - peer.sendTransaction(tx) + peer.sendTransactions(types.Transactions{tx}) } glog.V(logger.Detail).Infoln("broadcast tx to", len(peers), "peers") } diff --git a/eth/metrics.go b/eth/metrics.go new file mode 100644 index 000000000..e056233f4 --- /dev/null +++ b/eth/metrics.go @@ -0,0 +1,26 @@ +package eth + +import "github.com/rcrowley/go-metrics" + +var ( + propTxnInPacketsMeter = metrics.GetOrRegisterMeter("eth/prop/txns/in/packets", metrics.DefaultRegistry) + propTxnInTrafficMeter = metrics.GetOrRegisterMeter("eth/prop/txns/in/traffic", metrics.DefaultRegistry) + propTxnOutPacketsMeter = metrics.GetOrRegisterMeter("eth/prop/txns/out/packets", metrics.DefaultRegistry) + propTxnOutTrafficMeter = metrics.GetOrRegisterMeter("eth/prop/txns/out/traffic", metrics.DefaultRegistry) + propHashInPacketsMeter = metrics.GetOrRegisterMeter("eth/prop/hashes/in/packets", metrics.DefaultRegistry) + propHashInTrafficMeter = metrics.GetOrRegisterMeter("eth/prop/hashes/in/traffic", metrics.DefaultRegistry) + propHashOutPacketsMeter = metrics.GetOrRegisterMeter("eth/prop/hashes/out/packets", metrics.DefaultRegistry) + propHashOutTrafficMeter = metrics.GetOrRegisterMeter("eth/prop/hashes/out/traffic", metrics.DefaultRegistry) + propBlockInPacketsMeter = metrics.GetOrRegisterMeter("eth/prop/blocks/in/packets", metrics.DefaultRegistry) + propBlockInTrafficMeter = metrics.GetOrRegisterMeter("eth/prop/blocks/in/traffic", metrics.DefaultRegistry) + propBlockOutPacketsMeter = metrics.GetOrRegisterMeter("eth/prop/blocks/out/packets", metrics.DefaultRegistry) + propBlockOutTrafficMeter = metrics.GetOrRegisterMeter("eth/prop/blocks/out/traffic", metrics.DefaultRegistry) + reqHashInPacketsMeter = metrics.GetOrRegisterMeter("eth/req/hashes/in/packets", metrics.DefaultRegistry) + reqHashInTrafficMeter = metrics.GetOrRegisterMeter("eth/req/hashes/in/traffic", metrics.DefaultRegistry) + reqHashOutPacketsMeter = metrics.GetOrRegisterMeter("eth/req/hashes/out/packets", metrics.DefaultRegistry) + reqHashOutTrafficMeter = metrics.GetOrRegisterMeter("eth/req/hashes/out/traffic", metrics.DefaultRegistry) + reqBlockInPacketsMeter = metrics.GetOrRegisterMeter("eth/req/blocks/in/packets", metrics.DefaultRegistry) + reqBlockInTrafficMeter = metrics.GetOrRegisterMeter("eth/req/blocks/in/traffic", metrics.DefaultRegistry) + reqBlockOutPacketsMeter = metrics.GetOrRegisterMeter("eth/req/blocks/out/packets", metrics.DefaultRegistry) + reqBlockOutTrafficMeter = metrics.GetOrRegisterMeter("eth/req/blocks/out/traffic", metrics.DefaultRegistry) +) diff --git a/eth/peer.go b/eth/peer.go index c7045282b..b0002ce81 100644 --- a/eth/peer.go +++ b/eth/peer.go @@ -38,7 +38,8 @@ type peer struct { rw p2p.MsgReadWriter - protv, netid int + version int // Protocol version negotiated + network int // Network ID being on id string @@ -53,7 +54,7 @@ type peer struct { blockHashes *set.Set } -func newPeer(protv, netid int, genesis, head common.Hash, td *big.Int, p *p2p.Peer, rw p2p.MsgReadWriter) *peer { +func newPeer(version, network int, genesis, head common.Hash, td *big.Int, p *p2p.Peer, rw p2p.MsgReadWriter) *peer { id := p.ID() return &peer{ @@ -62,8 +63,8 @@ func newPeer(protv, netid int, genesis, head common.Hash, td *big.Int, p *p2p.Pe genesis: genesis, ourHash: head, ourTd: td, - protv: protv, - netid: netid, + version: version, + network: network, id: fmt.Sprintf("%x", id[:8]), txHashes: set.New(), blockHashes: set.New(), @@ -104,46 +105,58 @@ func (p *peer) SetTd(td *big.Int) { } // sendTransactions sends transactions to the peer and includes the hashes -// in it's tx hash set for future reference. The tx hash will allow the -// manager to check whether the peer has already received this particular -// transaction +// in its transaction hash set for future reference. func (p *peer) sendTransactions(txs types.Transactions) error { + propTxnOutPacketsMeter.Mark(1) for _, tx := range txs { + propTxnOutTrafficMeter.Mark(tx.Size().Int64()) p.txHashes.Add(tx.Hash()) } - return p2p.Send(p.rw, TxMsg, txs) } +// sendBlockHashes sends a batch of known hashes to the remote peer. func (p *peer) sendBlockHashes(hashes []common.Hash) error { + reqHashOutPacketsMeter.Mark(1) + reqHashOutTrafficMeter.Mark(int64(32 * len(hashes))) + return p2p.Send(p.rw, BlockHashesMsg, hashes) } +// sendBlocks sends a batch of blocks to the remote peer. func (p *peer) sendBlocks(blocks []*types.Block) error { + reqBlockOutPacketsMeter.Mark(1) + for _, block := range blocks { + reqBlockOutTrafficMeter.Mark(block.Size().Int64()) + } return p2p.Send(p.rw, BlocksMsg, blocks) } +// sendNewBlockHashes announces the availability of a number of blocks through +// a hash notification. func (p *peer) sendNewBlockHashes(hashes []common.Hash) error { + propHashOutPacketsMeter.Mark(1) + propHashOutTrafficMeter.Mark(int64(32 * len(hashes))) + for _, hash := range hashes { p.blockHashes.Add(hash) } return p2p.Send(p.rw, NewBlockHashesMsg, hashes) } +// sendNewBlock propagates an entire block to a remote peer. func (p *peer) sendNewBlock(block *types.Block) error { - p.blockHashes.Add(block.Hash()) + propBlockOutPacketsMeter.Mark(1) + propBlockOutTrafficMeter.Mark(block.Size().Int64()) + p.blockHashes.Add(block.Hash()) return p2p.Send(p.rw, NewBlockMsg, []interface{}{block, block.Td}) } -func (p *peer) sendTransaction(tx *types.Transaction) error { - p.txHashes.Add(tx.Hash()) - - return p2p.Send(p.rw, TxMsg, []*types.Transaction{tx}) -} - +// requestHashes fetches a batch of hashes from a peer, starting at from, going +// towards the genesis block. func (p *peer) requestHashes(from common.Hash) error { - glog.V(logger.Debug).Infof("[%s] fetching hashes (%d) %x...\n", p.id, downloader.MaxHashFetch, from[:4]) + glog.V(logger.Debug).Infof("Peer [%s] fetching hashes (%d) %x...\n", p.id, downloader.MaxHashFetch, from[:4]) return p2p.Send(p.rw, GetBlockHashesMsg, getBlockHashesMsgData{from, uint64(downloader.MaxHashFetch)}) } @@ -156,8 +169,8 @@ func (p *peer) handleStatus() error { errc := make(chan error, 1) go func() { errc <- p2p.Send(p.rw, StatusMsg, &statusMsgData{ - ProtocolVersion: uint32(p.protv), - NetworkId: uint32(p.netid), + ProtocolVersion: uint32(p.version), + NetworkId: uint32(p.network), TD: p.ourTd, CurrentBlock: p.ourHash, GenesisBlock: p.genesis, @@ -185,12 +198,12 @@ func (p *peer) handleStatus() error { return errResp(ErrGenesisBlockMismatch, "%x (!= %x)", status.GenesisBlock, p.genesis) } - if int(status.NetworkId) != p.netid { - return errResp(ErrNetworkIdMismatch, "%d (!= %d)", status.NetworkId, p.netid) + if int(status.NetworkId) != p.network { + return errResp(ErrNetworkIdMismatch, "%d (!= %d)", status.NetworkId, p.network) } - if int(status.ProtocolVersion) != p.protv { - return errResp(ErrProtocolVersionMismatch, "%d (!= %d)", status.ProtocolVersion, p.protv) + if int(status.ProtocolVersion) != p.version { + return errResp(ErrProtocolVersionMismatch, "%d (!= %d)", status.ProtocolVersion, p.version) } // Set the total difficulty of the peer p.td = status.TD @@ -200,6 +213,13 @@ func (p *peer) handleStatus() error { return <-errc } +// String implements fmt.Stringer. +func (p *peer) String() string { + return fmt.Sprintf("Peer %s [%s]", p.id, + fmt.Sprintf("eth/%2d", p.version), + ) +} + // peerSet represents the collection of active peers currently participating in // the Ethereum sub-protocol. type peerSet struct { -- cgit